Start rite Mercury drilling machine

I have just aquired a startrite mercury pedestal drill. I wish to replace the chuck but I am at a bit of a loss to remove the old one. Above the chuck are two knurled rings with holes in the periphery ( I suspect these are ejector nuts) the whole lot is solid, before embarking on a brute force and ignorance attack on it I wonder if any of you guys that have this machine can help.

Hold the top 0ne and wind the bottom one down and it will push the chuck off....like a rocket if it's tight

Thanks Ian, That's roughly what I thought but deemed it wise to ask. A good spray with WD 40 as it looks like it has not been appart for 30yrs and has lain idle for 5yrs then give it a go tomorrow morning.

Dusty

I would prefer Plusgas ( the liquid rather than the spray )

Roy

ps I've got the same drill

Yes Roy I am using what I have and keeping my fingers crossed. If that fails then Plusgas it is. Do you know what the chuck taper is, I take it that the chuck fits direct to the spindle as it seems to small for an internal morse taper.

Dusty Sorry no idea mine has never been off  As an afterthought just make sure that there isn't a screw inside the chuck into the end of the spindle

Edited By roy entwistle on 02/08/2016 20:12:30

If it is any help, Machine Spares (no connection, just looked about as curious) have diagrams and parts lists online for 5 and 10-speed Mercury drills.

**LINK**

Brian

I am wondering how old my machine is as it is only a four speed jobby. This is born out by the speed range shown on the front of the drill. Replacing the pulley's is not an option at £140-00 for the pair, more than the machine is worth. Now to see if I can remove the chuck.

Well the chuck did come off after much invective was hurled in its direction, (it was a trifle stubborn) I have now discovered it is a J33 taper. It had been my intention to fit a nice keyless chuck when the refurbishment had been completed, but yes you have guessed it, no keyless chucks with J33 taper. The chuck fitted is a bit loose and floppy and not much use, so it looks like a new Jacobs chuck is needed. Why is it that you think you are going to have an easy cheap job it always costs twice as much as you think it will.

.

It might be worth looking here, for example. [although currently out of stock] 

https://www.amazon.co.uk/Jacobs-33364-Industrial-Chuck-Millimeter/dp/B001DZDDQO

[or did you just mean that you haven't got one 'in stock'?]

MichaelG..

.

Edit: Just found this

http://www.knighton-tools.co.uk

Edited By Michael Gilligan on 03/08/2016 18:07:45

Modern Jacobs chucks don't have very good reputation. Jacobs as a firm in the terms that folk like us understand no longer exists. Just a badge and hefty mark-up applied to contract made imports. ven back in the day Jacobs version of the keyless chuck was never that wonderful. The lock up underdrilling pressure gubbins was never as effective as the best brands. Prone to drill slip back, especially if the drill shank is less than perfect, which jams things up good and solid when the drill end hits the base of the chuck. Pipe wrench time to undo. Minor saving grace is that at least they rarely spun up like a not quite tight enough drill in a keyed chuck wrecking the shank.

No such thing as a cheap job. Or easy for that matter. Might seem to be for a while but thats just delayed reaction 'cos the gremlin squad is busy.

Clive.

I was lucky my £50 Mercury bench came with an Albrecht keyless chuck. Which i swiftly removed and use it now on my lathe .It was only 0-10mm capacity .

If i remember right i just used one of those j33 adapters for an accupro keyed 13mm chuck replacement

You were right Michael, 3 keyless chucks including a genuine Albrecht, non with the required taper. Non of the usual suppliers seem to stock a reasonable priced item, and around £60-00 for what is available will make it an expensive refurb. How right Clive is when he says " no such thing as a cheap job, or easy" we do like to kid ourselves. Still I might win the Lottery tonight, well if I had done it.

.

I bet there is someone out there, with exactly the opposite problem.

... Why not post a couple of adverts, in Sales and Wants [= Exchange]

MichaelG.

For data on commonly available drills in the UK, try this FAQ page from lathes.co.uk. It has hyperlinks to many common types and models. **LINK**

Exactly a year and a half down the line, I think you may have answered a question that was never asked on the thread above

Keyless chucks certainly exist in J33, I found a keyed Jacob's when I started stripping my Mercury on ebay, thanks to a saved search (the drill had been left in the garden with a 6" grinding wheel in the chuck on an arbor for lawnmower blade sharpening).

A few months later, the saved ebay search netted a keyless Rohm for 99p. It's the loveliest chuck I've ever been near, very silky action.

99 pence for a keyless Rohm? Sounds like a very good buy!

It is written,or if not,it should be------------------THERE IS NO SUCH THING AS A HANDY JOB !!!